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Heebie Jeebies

Crookes Radiometer


Learn all about thermodynamics with the Crookes Radiometer.

When exposed to light or heat, the vanes will spin!

In 1873, chemist Sir William Crookes noticed that sunlight shining on his balance scale disturbed the chemical samples he was weighing. Investigation led to the invention of the Radiometer, an easy to use example of a heat engine!